
 <naverr
  d1="***naverr --- problem with navigation"
  proc="$Stop`Warning==ready" message="problem: #prior_#, -- #error_# at url: #url_#">
 </naverr>
 <formaterr
  d1="***formaterr --- problem with navigation"
  proc="$Stop`Warning==ready" message="format: #msg_#, -- #error_# at url: #url_#">
 </formaterr>
 <errserve
  d1="***errserve --- problem with navigation"
  proc="$Stop`Warning==ready" message="serve: #msg_#, -- #error_# at url: #url_#">
 </errserve>
